#0B3D91 · Cobalt

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#0B3D91 is a dark, highly saturated blue color, closest to Cobalt and near Cobalt and Sapphire. In OKLCH it has 39% lightness and 0.15 chroma at hue 261°. Blue suggests trust, stability and calm; it is the most used hue in corporate and tech branding, which makes #0B3D91 a natural choice for links, primary buttons, finance and technology. It appears in 3 ColorSwoop palettes.

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HEX#0B3D91
RGBrgb(11, 61, 145)
HSLhsl(218, 86%, 31%)
CMYK92, 58, 0, 43
CSS var--cobalt
Contrast10.04:1 white · 2.09:1 black

Similar named colors

How to use #0B3D91

White text passes WCAG AA on #0B3D91 (10.04:1); black does not, so keep dark text off it.

For a calm scheme pair #0B3D91 with its analogous neighbors #0B8193 and #1D0B93; for contrast use its complement #93610B as a small accent, and anchor everything with a neutral such as #F5F5F7.

--cobalt: #0B3D91;

Shades & tints

Color harmonies for #0B3D91

Complementary

Analogous

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Split complementary

Tetradic

Palettes with #0B3D91